<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../public/js/vue.js"></script>
</head>
<body>
    <div id="app">
        <h1>{{message}}</h1>
        <!-- v-once 只会渲染一次，不会在值变化时跟随渲染 -->
        <h2 v-once>{{message}}</h2>  
    </div>
    <script>
        const app = new Vue({
            el:"#app",
            data(){
                return {
                    message:'你好啊，李银河！'
                }
            }
        })
    </script>
</body>
</html>